Home / 20,872.83-31,309.32-6,082.13

Finding the Fourth Proportional to 20,872.83, 31,309.32 and 6,082.13

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Solution

The fourth proportional to 20,872.83, 31,309.32 and 6,082.13 is: 9,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.83 : 31,309.32 = 6,082.13 : x
  2. Step 2: Convert to fraction form
    20,872.83/31,309.32 = 6,082.13/x
  3. Step 3: Cross multiply
    20,872.83x = 31,309.32 × 6,082.13
  4. Step 4: Simplify right side
    20,872.83x = 190,427,197.91
  5. Step 5: Solve for x
    x = 190,427,197.91/20,872.83
  6. Step 6: Final answer
    x = 9,123.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.